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(11) | EP 2 354 809 A3 |
| (12) | EUROPEAN PATENT APPLICATION |
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| (54) | Automatic gain stabilization and temperature compensation for organic and/or plastic scintillation devices |
| (57) A detector and associated method are provided including a first scintillation material
having a light yield temperature dependence and an output at a first energy level,
a second scintillation material having a light yield temperature dependence similar
to the first material and an output at a second energy level, and detection circuitry.
The first and second outputs are responsive to radiation emitted from an ionizing
radiation source. The detection circuitry includes a photo multiplier tube configured
to convert photon outputs from the first and second scintillating materials to electrical
pulses, a counter circuit configured to count the electrical pulses generated in the
photo multiplier tube by the first and second materials, and a gain control circuit
configured to monitor the electrical pulses generated in the photomultiplier tube
by the second material and adjust a gain of the detector upon detecting a drift in
the output of the second material.
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